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Finding the Fourth Proportional to 90,777, 125,272.26 and 51,033

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Solution

The fourth proportional to 90,777, 125,272.26 and 51,033 is: 70,425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,777 : 125,272.26 = 51,033 : x
  2. Step 2: Convert to fraction form
    90,777/125,272.26 = 51,033/x
  3. Step 3: Cross multiply
    90,777x = 125,272.26 × 51,033
  4. Step 4: Simplify right side
    90,777x = 6,393,019,244.58
  5. Step 5: Solve for x
    x = 6,393,019,244.58/90,777
  6. Step 6: Final answer
    x = 70,425.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.